linux-kernel - Re: pstore: Improve a size determination in three functions

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Message-ID: <713573fc-52e8-d7a0-f4c0-2ce514dd1d1f@users.sourceforge.net>
Date:   Wed, 16 Aug 2017 22:03:32 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     Kees Cook <keescook@...omium.org>
Cc:     Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>,
        kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: pstore: Improve a size determination in three functions

> Which script detected this?

* checkpatch.pl

* The following approach for the semantic patch language.

@replacement@
identifier action, var, work;
statement s1, s2;
statement list sl;
type T, X;
@@
 T work(...)
 {
 ... when any
 X* var;
 ... when any
 var = action(...,
              sizeof(
-                    X
+                    *var
                    ),
              ...
             )
 ... when any
 }